Question # 1

Which of the followings in not true about the opening and Closing of Stomata?

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Light helps in the opening and closing of stomata

K⁺ ions are responsible for the opening and closing of stomata

The osmosis of water is responsible for the opening and closing of stomata

None for these

Cell theory was proposed in :

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1938

1838

1948

1848

Low ..... level can cause people to develop anemia.

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Calicium

Vitamin

Iron

Protein

Felis Tigris is scientific name of ____________

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Cat

Lion

Tiger

Deer

Classification means the grouping of organisms on the basis of:

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How they feed

The features they have in common

How they respire

How they can survive

In which stage of the cell cycle each chromosomes is duplicated and so it consists of two chromatids?

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G I

S

M

G2

................... is the most acceptable model to understand the structure of well membrane.

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Sandwich permeable

Fluid Mosaic Model

Darwin Model

All

Scientific law is interchangeable with :

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Hypothesis

Theory

Deduction

Observation

All prokaryotic organisms are included in kingdom;

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Protista

Monera

Fungi

Plantae

Exchange of water vapours and gases occurs in leaf through:

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Stomata

Epidermics

Xylem

Phloem

Cell theory was proposed by:

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Theodor Sachwann

Mathias Schleiden

Both a & b

None

A symbolic interaction in which both partners get benefits:

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Mutualism

Commensalism

Parasitism

Predation

Urokinase is used:

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to dissolve blood clots

to kill bacteria

as pain killer

to synthesize insulin

Female reproductive part of flower is called:

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Androecium

Gynoecium

Calyx

Corolla

The type of symbiotic relationship in which one member get benefit and other is harmed is called.

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Parasitism

Mutualism

Commensalism

Predation

The materials flow from one trophic level to the next by means of:

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Food chains

Food web

Both a & b

None of these

The hormone which increase the rate of reabsorption of water form nephorn is:

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glucagon

insulin

vesoporession

epineophrine

A DNA molecule consists of______ polynucleotide strands.

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2

3

4

5

The end of the skeletal muscle attached with ammoveable bone is called:

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Origin

Tendon

Ligament

Insertion

Where does the gaseous exchange occur in humans?

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Pharynx

Trachea

Bronchi

Alveoli

A coordinated action has components:

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3

4

5

6

50 kilogram of yeast produces how many tons of proteins within 24 hours.

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250

150

350

450

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